The graph below represents the distance a pilot is from the home airport during a period of time. A graph titled Pilot's Distance from Home. The horizontal axis shows time (hours) and the vertical axis shows distance (miles). Both axes are unnumbered. A line is shown in 3 sections, labeled I, II, and III. Sections I and III show a reduction in distance over time and section II is constant.

Which describes the pilot’s distance in section I?

zero
constant
decreasing
increasing

Aschool typically sells 500 yearbooks each year for 50 dollars each. the economic calls does a project and discovers that they can sell 100 more yearbooks for every $5 decrease in price. the revenue for yearbook sales is equal to the number of yearbooks sold times the price of the yearbook. let x represent the number of $5 decrease in price. if the expression that represents the revenue is written in the form r(x)=(500+ax)(50-bx). to maximize profit, what price should the school charge for the yearbooks? what is the possible maximum revenue? if the school attains the maximum revenue, how many yearbooks will they sell?

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827